Improvement in lard-presses



A'UNITED STATES PATENT OFFICE;

SAMUEL R. BARTLETT, OF BURLINGTON, IOWA.

IMPROVEMENT IN LARD-PRESSES.

Specification forming part of Letters Patent No. 153,926, dated August11, 1874; application filed July 22, 1874.

To all whom it may concern Be it known that I, SAMUEL R. BARTLETT, ofBurlington, county of Des Moines, and State of Iowa, have inventedcertain Improvements in Lard-Presses, of which the following is aspecification:

This invention relates to that class of presses used for separatingliquids from the solids which contain them; and the nature thereofconsists, first, in making the pressing floor or bottom of the colander,which contains the mass to be separated, adjustable and movable to andfrom thebody part thereof; second, in the combination of devices withthe movable bottom, by which it may be properly guided, and may beretained in a fixed position during the operation of pressing; third, inthe combination of devices for raising and lowering the movable bottomin the operation of discharging the recremental matter; fourth,

1n improvements in construction, all as hereinafter described.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe the same with reference to the ac companyingdrawings, in which- Figure l is a side elevation of a machine embodyingmy invention. Fig. 2 is a horizontal sectional view of Fig. 1 on theline w az. Fig. 3 is a vertical sectional view of Fig. 2 on the line yy.

Referring to the parts by letters, letter A A represents the colander orreceiver for the article to be pressed. It is shown cylindrical in formin the drawings, open at both ends, its lower part perforated with holesa, while from its upper part rise two standards or columns, a a', whichare cast solid with A, and,'uniting at their upper ends, form a solidarch, A', the upper central part of which is pierced vertically with ahole, which is threaded for the reception of the screw C, ou the lowerend of which is the platen or follower c, and on its upper end thehand-wheel c or any suitable propelling device. o a a. are thesupporting-legs. D is the bottom or pressing door, 'somewhat greater indiameter than the colander A, with an annular rim, d, and dischargespout d. EE are the suspension or lifter rods, two or more in number,their lower ends attached to the bottom D, and their central thecolander parts passing upward through holes in projections a from thesides of the colander A, their central parts having slots e, throughwhich keys e may be inserted, as hereinafter described, and their upperends provided each with a chain, Ef', the upper ends of which carry eachan enlarged link, which may be readily engaged with or disengaged fromthe hooked ends of the lifter-arms F F, the central part of whichsurrounds the screw O between two collars, f, in such manner that saidarms F will be made to traverse with the screw O. G is an ordinaryring-shield, suspended by set-sorews g around the perforated lower endof the cylindrical colander A.

The operation is as follows: The bottom D is fixed in position forpressing by inserting the keys e" through the slots e in thesuspensionrods E, and through the projections a. The chains E now beingunhooked from the arms F, the screw C may be turned to run the followerc upward above the-upper end of 4the colander A, which may then becharged with the article to be pressed. The pressing is done in theobvious manner by turning down the screw C, the recremental matter being'retained in the colander A bythe now fixed bottom lD, and the fluidbeing pressed out upon the said bottom `may be received in any vesselplaced under its spout d. The keys e now being removed, and the chains Ehooked upon the lifter-arms F, the pressing downward may be continued,forcing the cake of compressed recrements downward with the bottom D farenough, so that it may be removed without difficulty. The bottom may beagain elevated into its aforesaid ixed po sition by turning the screw Cupward, and, when the proper position is reached, the keys e are againinserted and the chains E released for arepetitionof thealready-described operation. The colander A and arch A being constructedsolid will always prevent their getting out of their relative positions,and preserve the almost perfect alignment of the parts.

What I claim as new is- 1. The bottom D, movable and adjustablerelatively to the colander A, substantially as described, and for thepurpose specified.

2. The lifting-rods E and keys e, arranged to operate with the bottomD,ztnd eolauder A, 4. The colander A, with the arch A', for having akey-seat, a, substantially as desupporting the screw C, cast or formedasa scribed, and for the purpose set forth. part thereof, substantiallyas described, and

3. The lifter-arm F, attached to the screw for the purpose specified.

C, as described, and arranged to operate With SAMUEL R. BARTLETT.

the lifter-chains Ef, rods E, bottom D7 and col- Witnesses:

ander A, substantially as described, and for WOLCOTT SEYMOUR,

the purpose specified. WILLIAM GARRETT.

